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However, a function pointer is not required to even have the same size as a data object pointer, and therefore a valid conversion between type void* and a pointer to a function may not be easy to implement on all platforms. On most systems in use today, function and object pointers are de facto convertible. The following code snippet ...
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All-equal and not-all-equal function: their values is 1 when the inputs do (not) all have the same value; Exact-count functions: their value is 1 on input vectors with k ones for a fixed k. One-hot or 1-in-n function: their value is 1 on input vectors with exactly one one; One-cold function: their value is 1 on input vectors with exactly one zero
Count leading zeros and count trailing zeros can be used together to implement Gosper's loop-detection algorithm, [54] which can find the period of a function of finite range using limited resources. [42] The binary GCD algorithm spends many cycles removing trailing zeros; this can be replaced by a count trailing zeros (ctz) followed by a shift.
The HyperLogLog has three main operations: add to add a new element to the set, count to obtain the cardinality of the set and merge to obtain the union of two sets. Some derived operations can be computed using the inclusion–exclusion principle like the cardinality of the intersection or the cardinality of the difference between two HyperLogLogs combining the merge and count operations.
returns a processor tick count associated with the process timespec_get (C11) returns a calendar time based on a time base Format conversions asctime: converts a struct tm object to a textual representation (deprecated) ctime: converts a time_t value to a textual representation strftime: converts a struct tm object to custom textual ...